culmination vs culminate

culmination is a noun but culminate is not a noun.

Word	Noun	Adjective	Verb	Adverb
culmination	Yes	No	No	No
culminate	No	No	Yes	No

culmination (noun)	culminate (noun)
a concluding action
the decisive moment in a novel or play
(astronomy) a heavenly body's highest celestial point above an observer's horizon
a final climactic stage

culmination (verb)	culminate (verb)
	end, especially to reach a final or climactic stage
	rise to, or form, a summit
	bring to a head or to the highest point
	reach the highest altitude or the meridian, of a celestial body
	reach the highest or most decisive point